#define SingleH(name) +(instancetype)share##name;

#if __has_feature(objc_arc)

#define SingleM(name) \
static id _instance;\
+ (instancetype)share##name {\
   return [[self alloc]init];\
}\
+ (instancetype)allocWithZone:(struct _NSZone *)zone {\
   static dispatch_once_t onceToken;\
   dispatch_once(&onceToken, ^{\
      _instance = [super allocWithZone:zone];\
   });\
   return _instance;\
}\
-(id)copyWithZone:(NSZone *)zone {\
   return  _instance;\
}\
-(id)mutableCopyWithZone:(NSZone *)zone {\
   return _instance;\
}

#else

#define SingleM(name) \
static id _instance;\
+ (instancetype)share##name {\
return [[self alloc]init];\
}\
+ (instancetype)allocWithZone:(struct _NSZone *)zone {\
static dispatch_once_t onceToken;\
dispatch_once(&onceToken, ^{\
_instance = [super allocWithZone:zone];\
});\
return _instance;\
}\
-(id)copyWithZone:(NSZone *)zone {\
return  _instance;\
}\
-(id)mutableCopyWithZone:(NSZone *)zone {\
return _instance;\
}\
-(oneway void)release {\
\
}\
- (instancetype)retain {\
   return _instance;\
}\
- (NSUInteger)retainCount {\
   return MAXFLOAT;\
}

#endif
